Flue and smoke-stack protector



L-. N.- DUNMORE. 1) SMOKE STACK PROV FLU No. 572,415. Patented Dec. 1,1896.

"I TERS CO PHUTQ-UTHO WASHINGTON D D UNITED STATES PATENT OFFICE.

LEYVIS N. DUNMORE, OF DOUGLASS, KANSAS.

FLUE AND SMOKE-STACK PROTECTOR.

SPECIFICATION forming part of Letters Patent No. 572,415, dated December1, 1896.

Application filed January 20, 1896. Serial No. 576,234- (No model.)

To all whom it may concern:

Be it known that I, LEWIS N. DUNMORE, of Douglass, Butler county,Kansas, have invented certain new and useful Improvements in Flue andSmoke-Stack Protectors, of which the following is a clear and exactdescription.

The object of this combination as an invention is to protect the draftof stovepipes, chimneys, and smoke-stacks, and can be used as aventilator.

My invention relates to flue and smokestack protectors; and it consistsof a pipe adapted and adjusted to the top of a flue and provided withtwo perforated and one solid conic shaped caps and draft openingsbetween said caps, in combination with a drum adjusted over and aroundthe upper part of caps C C between the opening in the pipe A and thesolid cap D help the draft by dividing the column of hot air and smokeand turning part of it out toward the drum B before it reaches the solidcap D.

B is the drum adjusted over and around the upper portion of the pipe Aand caps O O and D, and is made larger at the bottom than at the top toallow the downward currents of air to pass out freely together with thesmoke escaping from the pipe A. The smoke in coming from the pipe Apasses out of the top of the drum B unless driven downward by the wind.In adverse winds the drum B being open at the top and bottom allows thesmoke to pass out interchangeably without being collected or hindered,thus making a perfect draft in any condition of the atmosphere.

The combination as an invention is to be made of steel, sheet-iron, orother suitable material and can be made in round or square form, as bestsuited to maker in fitting them to pipes or flues.

I am aware that prior to my invention caps, solid and perforated, havebeen used in other mechanical inventions. Therefore I do not claim thiscombination, broadly; but

Vhat I do claim as my invention, and desire to secure by Letters Patent,is-

The combination with a section of stovepipe, smoke-stack or flue a drumB provided with two or more conic-shaped caps O and D, all perforatedbut the top one and all fastened to inside of drum B so they will bedirectly over and allow the drum B to come down below the opening einpipe or smoke-stack, the drum B being made larger at the bottom as shownsubstantially as and for the purpose described.

LE\VIS N. DUNMORE.

Witnesses: I

W. A. PHIPPS, Ron. DAVIS.

